Charnley House

This collaboration of two of the world's most-famous architects combines the geometry, massing, and detailing of a mature Louis Sullivan with the earliest hint of Frank Lloyd Wright's Prairie-style planning and design. A compact urban townhouse that takes maximum advantage of its small city lot, it was built for James Charnley, a Chicago lumber dealer. Wright later proclaimed it as "the first modern house." It is located in the Astor Street District.